section 6 Current treatments for pain Flashcards
reffered pain
nociceptive pain arrising in one region but felt in other
- can be symptom of serious condition
left arm pain- heart attack
neuropathic pain
result of damaged to axon of nociceptor ; axon squeezed -production of action potential
7% people suffer, difficult to treat
alcoholism, spinal cord injury, cancer, diabetes nerve disorder, shingles, phantom pain
plasticity
process of changes in connection between neurons
invasive treatments
Non- steroidal anti inflammatory drug - NSAID local anaesthetic Opiates Antidepressants Surgery TENS
non invastive treatments
CBT therapy
NSAID
aspirin, ibuprofen
- acute nociceptive pain
- preventing the release of prostaglandins
- work on nerve endings
- reduce the frequency of action potential
Local anaesthetic
lignocaine
- blocking the voltage sensitive Na+ channels in axon of nociceptor
- used for acute nociceptive pain - dentist
Opiates
- morphine - opioid agonist
- mimic opioids like enkephalin
- work on spinal cord
- severe nociceptive pain, neuropatic pain in cancer patients
antagonist
blocking naturally occuring substances
enkephalin target pain in 2 ways…
- binds to receptor on transmission cell and inhibits it therefore frequency of action potential reduces
- reduces the no. of neurotransmitters released from nociceptor in spinal cord
Antidepressants
Amnitriptiline
- neuropatic pain
- Increases activity in the pathway from the brain to the spinal cord but may also act elsewhere in brain.
Surgery on CNS
- cordotomy
- Can be applied to the spinothalamic pathway, or brain regions associated with pain processing including thalamus and anterior cingulate cortex.
-Pain resistant to other treatments, often neuropathic pain associated with late-stage cancer.
TENS
Transcutaneous electric nerve stimulation
- Spinal cord to close the gate.
- Nociceptive and neuropathic pain. Include labour pain.
CBT
cognitive behaviour therapy
-Aims to challenge the behaviours and thoughts a person has surrounding their painful experiences.
-targets any pain
learnt helplessness
mindset that can develop in response to feeling that you have no control over negative situation
cognitive appraisal
thoughts person has about situation in terms of how they interpret or explain their experience.
That influance how people behave.